Dear list-members. New to the list and an archive search didn't help so
far.
I'm trying to use the internal sound of a lenovo miix 310 tablet (intel
atom x5-Z8350 based). It's an alsa-only configuration. Sound works with
an external usb soundcard when blacklisting the kernel modules for the
internal sound device.
It seems that I'm having a rt5645 device. But I cannot play anything on
it. With the many channels and options this device has, the ucm rules as
well, I'm stuck. My basic question is: How can I figure out where the
problem actually is? Is the hardware not supported? Is it a routing
issue? Any other things I need to check?
Some of the things I tried with output:
aplay -l:
**** List of PLAYBACK Hardware Devices ****
card 0: chtrt5645 [chtrt5645], device 0: Audio (*) []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: chtrt5645 [chtrt5645], device 1: Deep-Buffer Audio (*) []
Subdevices: 1/1
Subdevice #0: subdevice #0
alsaucm list _verbs:
0: HiFi
Default
(for alsaucm, I've created symlinks in /usr/share/alsa/ucm/ for
LENOVO-80SG-MIIX310_10ICR-Cavalli, pointing to chtrt5645, then: alsaucm
open chtrt5645)
cat /proc/asound/devices
2: [ 0- 0]: digital audio playback
3: [ 0- 0]: digital audio capture
4: [ 0- 1]: digital audio playback
5: [ 0] : control
33: : timer
cat /proc/asound/cards
0 [chtrt5645 ]: chtrt5645 - chtrt5645
LENOVO-80SG-MIIX310_10ICR-Cavalli
I also blacklisted the hdmi module in /etc/modprobe.d/blacklisted.conf:
blacklist snd_hdmi_lpe_audio
aplay someSound.wav:
ALSA lib pcm_direct.c:1824:(_snd_pcm_direct_get_slave_ipc_offset)
Invalid value for card
aplay: main:828: audio open error: No such file or directory
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